Automatic air-valve for steam-radiators



(No Modeli) P. GORMLYQ AUTOMATIC AIR VALVE FOR STEAM RA'DIATORS.

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communicating at each end with the chamber pipe f, the air escaping through the opening UNITED STATES PATENT. @rrrca PATRICK GORMLY, OF PHILADELPHIA, PENNSYLVANIA.

5PEC'IPIGATION forming part of Letters Application filed October 27, 1884.

T0 ctZZ whom it may concern.-

.Beit known that I, PATRICK Gonirmna citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Automatic Air Valves for Steam-Radiators, of which the following is a specification.

My invention relates to automatic valves for the discharge of air from a steam-radiator on first turning on the steam, and for the admission of air thereto when the steam is out OK, the objects of my improvements being to insure the quick action of the valve, and to prevent the same from being tampered with by meddlesome persons.

In the accompanying drawings, Figure 1 is a longitudinal section of an automatic airvalve constructed in accordance with my in vention; Fig. 2, a transverse section of the same; Fig. 3, a sectional plan View on the line 1 2, Fig. 1; Fig. 4c, a sectional plan view on the line 3 4, Fig. 1; and Fig. 5, a sectional view illustrating a modified form of air-valve.

In Figs. 1 to 1, A and B are two pipes or tubes secured at the upper and lower ends to rings a, and inclosing an annular chamber, Z), the pipe A having at the lower end a branch, (I, for attachment to one of the pipes of the radiator.

Extending transversely across the tube B, near the upper end of the same, is a pipe, f,

b, and having in the top an opening, 13, Fig. 3, the edge of which forms the seat for a valve, m, the latter consisting of the conical end of a set-screw, i2, adapted to a nut, s, forming part of a yoke, t, which embraces the pipe f, and is secured to the upper end of a rod, w, the lower end of which is confined to a transverse bar, a, secured to the tube 11, near the lower end of the same. When the steam is cut off from the radiator, the pipes of thesame and the chamber 1) are filled with air, and the parts are in the position shown in the drawings, the valve or being free from contact with its seat. when the steam is first admitted to the radiator, it drives the air from the same, and through the branch d, chamber b, and

2',- but as soon as the radiator has been filled Patent No. 315,933, dated April 14, 1885.

(No model.) 7

with steam and the latter gains access to the chamber 1) the tubes Aand B will be expand ed, thus causing the seating of the valve at, so as to prevent the escape of steam. hen steam is cut off from the radiator and condensation takes place, the tubes A and B are contracted, so as to again expose the openiugi for the admission of air to the radiator. The quick action of the device is insured, owing to the fact that the rod 10 and yoke t, forming the valve-carrier, are exposed on all sides to the current of air rising through the tube B, so that there is little or no expansion of said Valve-carrier when the tribes are expanded on the admission of steam to the chamber 1). The tubes are carried up beyond the top of the yoke 15, so as to form a casing or guard which incloses the set-screw n, of which the valve forms part, thereby overcoming an objection to that class of air-valves in which the valve-screw is exposed, as such exposed valves are liable to be tampered with by meddlesome persons and the proper action of the valve thereby defeated. This tubular casing also provides a support for the cover 3/, which is preferably perforated for the escape of air.

In Fig. 5 Ihave shown a modification of my invention, in which the steam-chamber is within a pipe, I), having a valve-seat at the end, the valve-carrier i being in the form of a tube open at the bottom and surrounding the pipe I). This device contains, however, the two essential features of the invention namely, the valvecarrier exposed on all sides to the air, and the casing 0r guard inclosing the valve-screw. W'here the yoke t is cur ployed, the rod w may be dispensed with'and the legs of the yoke carried down and secured at or near the bottom of the tube B, as shown by dotted lines in Fig. 1.

I claim as my invention 1. The combination of the casing containing a chamber communicating with the radiator, and having an inclosed or guarded valveseat, a valve adapted to said seat and contained within the guard, and a valve-carrier exposed on all sides to the air, as set forth.

2. The combination of the tubes A and B, the branch d, the transverse tubef, with valveseat therein, the valve m, the yoke if, carrying IOCI said valve, and a support for said yoke as set In testimony whereof I have signed my name forth. to this specification in the, presence of two sub- 3. The combination of the tubes A and B, scribing witnesses. the branch d, the transverse tube f, with valve- PA TRICK GORMLY. 5 seat, the valve m, the yoke 15, carrying the Witnesses:

same,-the rod w, and the cross-bar w, as set JOHN M. GLAYToN, forth. HARRY SMITH. 

